Finding the Fourth Proportional to 135,905.70, 203,785.65 and 56,930.70
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Solution
The fourth proportional to 135,905.70, 203,785.65 and 56,930.70 is: 85,365.51
Step by Step Solution
- Step 1: Write the proportion equation
135,905.70 : 203,785.65 = 56,930.70 : x - Step 2: Convert to fraction form
135,905.70/203,785.65 = 56,930.70/x - Step 3: Cross multiply
135,905.70x = 203,785.65 × 56,930.70 - Step 4: Simplify right side
135,905.70x = 11,601,659,704.46 - Step 5: Solve for x
x = 11,601,659,704.46/135,905.70 - Step 6: Final answer
x = 85,365.51
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.